Screw compressor

A screw compressor comprising:

• a screw rotor which includes a toothed portion and a shaft portion;
• a gate rotor which meshes with said screw rotor;
• a low-pressure-side bearing and a high-pressure-side bearing which support the shaft portion of said screw rotor;
• a bearing which supports a shaft portion of said gate rotor;
• a driving motor which is directly connected to the shaft portion of said screw rotor and drives said screw rotor;
• a motor casing which accommodates said motor;
• a main casing which accommodates said screw rotor and said gate rotor;
• and
• a steel pipe chamber which accommodates said motor casing and said main casing,
• wherein said steel pipe chamber includes a low-pressure-side chamber and a high-pressure-side chamber which are able to be divided in an axial direction, and
• wherein a space inside said steel pipe chamber is divided into a low-pressure-side space and a high-pressure-side space through a flange provided on an inner surface of said steel pipe chamber, a flange provided in said main casing or said motor casing, and a sealing component provided between said flanges.

A screw compressor comprising:

• a screw rotor;
• a bearing which supports said screw rotor;
• a motor which drives said screw rotor;
• a motor casing which accommodates said motor;
• a main casing which accommodates said screw rotor;
• and
• a steel pipe chamber which accommodates said motor casing and said main casing,
• wherein said steel pipe chamber is able to be divided in an axial direction, and
• wherein a space inside said steel pipe chamber which is able to be divided is divided into a low-pressure-side space and a high-pressure-side space through a sealing component.